1. Scope

1.1 This practice establishes procedures for the burial of pressure and nonpressure 'fiberglass' (glass-fiber-reinforced thermosetting-resin) pipe in many typically encountered soil conditions. Included are recommendations for trenching, placing pipe, joining pipe, placing and compacting backfill, and monitoring deflection levels. Guidance for installation of fiberglass pipe in subaqueous conditions is not included.

1.2 Product standards for fiberglass pipe encompass a wide range of product variables. Diameters range from 1 in. to 12 ft and pipe stiffness range from 9 to over 72 psi with internal pressure ratings up to several thousand pound-force per square inch. This standard does not purport to consider all of the possible combinations of pipe, soil types, and natural ground conditions that may occur. The recommendations in this practice may need to be modified or expanded to meet the needs of some installation conditions. In particular, fiberglass pipe with diameters of a few inches are generally so stiff that they are frequently installed in accordance with different guidelines. Consult with the pipe manufacturer for guidance on which practices are applicable to these particular pipes.

1.3 The scope of this practice excludes product-performance criteria such as a minimum pipe stiffness, maximum service deflection, or long-term strength. Such parameters may be contained in product standards or design specifications, or both, for fiberglass pipe. It is incumbent upon the specified product manufacturer or project engineer to verify and ensure that the pipe specified for an intended application, when installed in accordance with procedures outlined in this practice, will provide a long-term, satisfactory performance in accordance with criteria established for that application.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D8 Terminology Relating to Materials for Roads and Pavements

D653 Terminology Relating to Soil, Rock, and Contained Fluids

D698 Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3))

D883 Terminology Relating to Plastics

D1556 Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method

D1557 Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))

D2167 Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method

D2216 Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

D2487 Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

D2488 Practice for Description and Identification of Soils (Visual-Manual Procedure)

D2922 Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth)

D3017 Test Method for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth)

D4253 Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table

D4254 Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density

D4318 Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

D4564 Test Method for Density and Unit Weight of Soil in Place by the Sleeve Method

D4643 Test Method for Determination of Water (Moisture) Content of Soil by Microwave Oven Heating

D4914 Test Methods for Density and Unit Weight of Soil and Rock in Place by the Sand Replacement Method in a Test Pit

D4944 Test Method for Field Determination of Water (Moisture) Content of Soil by the Calcium Carbide Gas Pressure Tester

D4959 Test Method for Determination of Water (Moisture) Content of Soil By Direct Heating

D5030 Test Method for Density of Soil and Rock in Place by the Water Replacement Method in a Test Pit

D5080 Test Method for Rapid Determination of Percent Compaction

F412 Terminology Relating to Plastic Piping Systems

Other Standards

Keywords

backfill; bedding; fiberglass pipe; haunching; soil stiffness; underground installation; Backfill; Bedding; Fiberglass pipe; Glass-fiber-reinforced thermosetting resin (fiberglass); Haunching; Nonpressure piping; Reinforced thermosetting-resin pipe (RTRP); Sewer pipe (thermoplastic); Soil stiffness; Trenches; Underground installation--water supply/distribution systems; Water supply/distribution systems;

ICS Code

ICS Number Code 23.040.20 (Plastic pipes)

DOI: 10.1520/D3839-94A

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